四角焊接螺帽

a) A square weld nut with prongs or projections is a type of fastener designed for welding to a metal surface. It is a square-shaped nut with four prongs on one side, which assist in the welding process and provide additional stability during installation.

b) Nycote prevents adhesion of weld spatter. This protective coating also improves lubricity and reduces installation drive friction.